midterm review 2 Flashcards
1
Q
posterior horn (antrum) normal value
A
<10 mm
2
Q
3rd and 4th ventricles connected through
A
aqueduct of sylvius
3
Q
which space contains CSF (2)
A
subarachnoid space
cisterna magna
4
Q
cerebellum corresponds to GA
A
true
5
Q
normal measurement of nuchal fold before 22 weeks should be
A
<6 mm
6
Q
normal fetal spine “flares” at
A
base of neck
7
Q
normal fetal spine tapers ____
A
caudally
8
Q
most common location spina bifida
A
lumbosacral
9
Q
AFP in maternal serum and amniotic fluid is increased with
A
open spina bifida (only)
10
Q
what parts of fetal vertebra are echogenic on US (2)
A
centrum
posterior arches
11
Q
max size of cisterna magna (mm)
A
10 mm
12
Q
what is the CRL size (cut off value) when heartbeat must be seen to rule out pregnancy failure
A
7mm
13
Q
aembryonic pole
A
capsularis
